In order to escape the rain, Ash and friends go inside a nearby castle. They venture into the castle and they discover it is actually a clinic where the doctors use pokémon to heal the patients. Team Rocket sneaks into the castle and steals some of the food. When they are discovered, they dash towards another room. Dr. Anna tells them not to go in there, so she and Brock follow them, but then the entrance to the dungeon becomes blocked. While Ash, Misty, and Anna's assistant go to find the entrance to the dungeon in the forest, Brock and Anna must survive the booby trapped maze in order to get out of the dungeon in one piece.